5 ms·
Amdahl's Law Is Misleading
- lend000 10y agoThis scatter-brained exposé really says nothing about Amdahl's Law except that there are still benefits to optimizing pieces that are not necessarily the main "bottleneck" of a task, which I think is obvious in relevant contexts.
- frostirosti 10y agoAmdahl's law is not misleading. Amdahl's law shows the speed up under a fixed problem size. Gustafson simple showed that since we parallelized an aspect of a problem, we can solve larger problems with the time saved. Amdahl's law is the max for fixed problem sizes.
- frostirosti 10y agoReevaluating Amdahl's Law. http://www.johngustafson.net/pubs/pub13/amdahl.pdf http://www.johngustafson.net/pubs/pub13/amdahl.pdf
- dnautics 10y agowow even this is a bit hard to parse (and I work with John!) Basically, Gustafson's law says, "yeah but really what you're going to do with massively parallel computing is you're going to run more copies of the same program, which has a linear scaling factor".
- zzzcpan 10y agoThe misleading part is how it is used. As things change, theoretical speed up of the solution becomes irrelevant, and problems also change.
- tedunangst 10y agoHow does amdahls law apply to articles that take two hours to read?
- AnimalMuppet 10y agoIt says that you don't parallelize well.
- PhantomGremlin 10y agoThat's not really fair. I skimmed it in less than 5 minutes, and I thought it was worthwhile.
- fpig 10y agoThis person should never write anything again.
- krylon 10y agoThe title is really awesome!
- deedree 10y agoLol, seeing the comments so far I might be the minority, but I loved reading this. Made my mind feel like it came up from under water to see the sun. Happy
- rullelito 10y agoWow, this was really not worth the time it took to read it.